- Bradley Cooper Chris Kyle
- Sienna Miller Taya Renae Kyle
- Luke Grimes Marc Lee
- Jake McDorman Biggles
- Keir O'Donnell Jeff Kyle
- Cory Hardrict D / Dandridge
- Navid Negahban Sheikh Al-Obodi
- Kyle Gallner Goat-Winston
- Sam Jaeger Navy Seal Lt. Martin
- Max Charles Colton
- Kevin Lacz Dauber / Asesor técnico de la marina
- Leonard Roberts Instructor Rolle
- Reynaldo Gallegos Tony